This is a stainless steel, 3d printed, tritium container ring with two already inserted tritium vials (2mm x 6mm).
To ensure maximum protection, the tritium vials are encapsulated in ''liquid glass'' resin and they are non-removable.

 

The Tritium vials used are light sources of gaseous tritium isotope, hermetically sealed in glass.
This radioactive tritium gas glows completely on its own, in a very safe manner, without needing to be 'charged' with light as required by most phosphorescent glow in the dark products.The light produced is literally ''on'' at all times, it's intensity isn't reduced after a few hours and will last non-stop for about 20 years. This is truly a ''nuclear powered'' ring!